APA (7th ed.) Citation

Krackhardt, R. H. (1966). Vacuum tube electronics. Merrill.

Chicago Style (17th ed.) Citation

Krackhardt, Russell H. Vacuum Tube Electronics. Columbus, Ohio: Merrill, 1966.

MLA (9th ed.) Citation

Krackhardt, Russell H. Vacuum Tube Electronics. Merrill, 1966.

Warning: These citations may not always be 100% accurate.